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   gnutls_x509_crq_get_key_usage    ( 3 )

Функции API (API function)

Имя (Name)

gnutls_x509_crq_get_key_usage - API function


Синопсис (Synopsis)

#include <gnutls/x509.h>

int gnutls_x509_crq_get_key_usage(gnutls_x509_crq_t crq, unsigned int * key_usage, unsigned int * critical);


Аргументы (Arguments)

gnutls_x509_crq_t crq should contain a gnutls_x509_crq_t type

unsigned int * key_usage where the key usage bits will be stored

unsigned int * critical will be non-zero if the extension is marked as critical


Описание (Description)

This function will return certificate's key usage, by reading the keyUsage X.509 extension (2.5.29.15). The key usage value will ORed values of the: GNUTLS_KEY_DIGITAL_SIGNATURE, GNUTLS_KEY_NON_REPUDIATION, GNUTLS_KEY_KEY_ENCIPHERMENT, GNUTLS_KEY_DATA_ENCIPHERMENT, GNUTLS_KEY_KEY_AGREEMENT, GNUTLS_KEY_KEY_CERT_SIGN, GNUTLS_KEY_CRL_SIGN, GNUTLS_KEY_ENCIPHER_ONLY, GNUTLS_KEY_DECIPHER_ONLY.


Возвращаемое значение (Return value)

the certificate key usage, or a negative error code in case of parsing error. If the certificate does not contain the keyUsage extension GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.


Сообщение об ошибках (Reporting bugs)

Report bugs to <bugs@gnutls.org>. Home page: https://www.gnutls.org


Смотри также (See also)

The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

https://www.gnutls.org/manual/